Do buildplate bolts affect heating?  

Re: Do buildplate bolts affect heating?

So before I start moving all my models around to "avoid the bolts" ... I'm *really* curious: if

* anyone has seen this issue around the bolt locations, or

* has any reason to suspect that this might be an issue, or even

* had done lots of curl-prone prints without every seeing this issue so that I can avoid shifting all my prints ...

Thanks for any thoughts / info you might have!

Re: Do buildplate bolts affect heating?

Hi Clint, I have never noticed a problem with the bolts,

it looks like you have a brim on the model, so I would expect that model to stick to the build plate quite well. however, however, it doesn't seem to stick.
it looks quite severe warping, have you tried a lower temperature for the filament on higher layers. ? this may help curb the curling.

you can try moving the print away from the bolts, but I would think that the issue is somewhere else.

have you cleaned the build plate?
could you try turning the model 90 degrees? this may help...

regards Joan

Re: Do buildplate bolts affect heating?

Thanks for the suggestions Joan!

In my particular situation, I have managed to "curb the curling" (sounds like the title for an article ... although the World Curling Federation might take exception). However, I was still interested if bolt-avoidance is warranted, in cases where a *slight* heatbed variation might make the difference between curl or no-curl. Found this thermal image in the Prusa archive of posts (edited to isolate the thermal image for just the Mk42 Heatbed):

... and this does seem to imply that, in borderline situations, bolt-avoidance might be warranted!

Thanks again for the help!

Re: Do buildplate bolts affect heating?

Have you checked that your live z is really squished down properly, and cleaning with Aceton?

I have never heard or considered this myself.

Re: Do buildplate bolts affect heating?

Thanks Gert ... Yes I have taken many steps toward improved HPB adhesion, and am now successful sticking all my prints.

However, I continued with this idea of bolt-avoidance ... which seems to be a *slight* and *minor* issue, but one that might be worth consideration if you're on the limit of adhesion. I think if just one corner is gonna curl, it's gonna be the one over the bolt.

Re: Do buildplate bolts affect heating?

Fair enough.

I have had times of bad adhesion too. In my case it always have been bad cleaning. Going from ABS to PLA really needs a good scrub down in my case..